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Get rid of delq in LAP optimiser
authorMattias Engdegård <mattiase@acm.org>
Sat, 4 Feb 2023 17:58:48 +0000 (18:58 +0100)
committerMattias Engdegård <mattiase@acm.org>
Sun, 5 Feb 2023 15:24:51 +0000 (16:24 +0100)
commit929099cbb435f8bc9461b8f0ba99a5f8c2093222
tree8cbbebe184ce81b33599d767656dca3ea3c635d1tree | snapshot
parent45525cafcbcc5205b7a3d53a6ae62c3ee31dfaf2commit | diff
Get rid of delq in LAP optimiser

* lisp/emacs-lisp/byte-opt.el (byte-optimize-lapcode):
Instead of using the O(n) `delq' to remove single instructions, use
the O(1) `setcdr'. To do this, anchor the instruction list in a cons
cell and use the predecessor cell in iteration.
lisp/emacs-lisp/byte-opt.el diff | blob | history
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